Readings on 05 Aug 2015

View reading for:

Region	24-hr Sulphur dioxide (µg/m³)	24-hr PM₁₀ (µg/m³)	1-hr Nitrogen dioxide (µg/m³)^a	8-hr Ozone (µg/m³)	8-hr Carbon monoxide (mg/m³)	24-hr PM_2.5 (µg/m³)
North	9(6)	27(27)	63(-)	26(11)	0.6(6)	17(56)
South	22(14)	22(22)	39(-)	20(9)	0.5(5)	14(53)
East	8(5)	19(19)	31(-)	33(14)	0.9(9)	13(52)
West	26(16)	24(24)	67(-)	18(8)	0.4(4)	13(52)
Central	14(9)	21(21)	56(-)	24(10)	0.6(6)	14(53)

1-hr PM_2.5 (µg/m³)^b Readings on 04 Aug 2015

View reading for:

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	10	14	18	32	34	25	10	6	6	7	6	3
South	14	9	14	8	17	17	20	8	8	9	8	13
East	9	9	14	10	12	13	20	11	5	7	17	11
West	12	10	11	11	10	10	10	7	6	7	5	8
Central	14	11	11	11	17	22	23	10	6	7	7	7
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	24	28	33	16	17	19	16	13	14	12	18	16
South	16	20	18	14	17	19	16	11	13	16	13	11
East	17	12	12	16	18	16	17	14	11	9	12	16
West	17	11	23	15	15	29	20	14	17	18	18	12
Central	21	17	15	13	14	17	15	11	11	16	15	15

Note:
^a Sub-index for nitrogen dioxide is reported only when the 1-hour concentration exceeds 1130 µg/m³.
^b There is no sub-index for 1-h PM_2.5.

3-hr PSI Readings from 1am to 12am on 04 Aug 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	41	44	51	52	55	56	57	53	43	31	31	34
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	51	54	59	57	57	57	57	56	54	53	53	54

The real-time data is automatically published as soon as it is generated by our air monitoring stations. The data is subject to verification and correction subsequently if necessary.

Contact Us

Hotline	1800 CALL NEA (1800-225 5632)
Weather	6542 7788
Fax	6235 2611
Feedback

Our Location

Main Office
Customer Service Centre
Other Offices

National Environment Agency
40 Scotts Road, #13-00
Environment Building
Singapore 228231

Customer Service Centre
40 Scotts Road #02-00
Environment Building
Singapore 228231
Customer Service Centre (Hawkers)
HDB Hub, East Wing, #26-01
480 Lorong 6 Toa Payoh
Singapore 310480