Readings on 30 Jul 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	5(3)	18(18)	33(-)	19(8)	0.4(4)	8(33)
South	10(6)	15(15)	21(-)	19(8)	0.4(4)	10(44)
East	8(5)	16(16)	15(-)	18(8)	0.7(7)	9(38)
West	13(8)	21(21)	26(-)	20(8)	0.3(3)	9(39)
Central	5(3)	17(17)	26(-)	19(8)	0.4(4)	8(33)

1-hr PM_2.5 (µg/m³)^b Readings on 29 Jul 2015

View reading for:

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	4	5	4	2	3	4	6	6	7	10	13	11
South	8	9	4	5	7	9	5	2	4	12	8	13
East	6	6	4	3	5	7	5	5	9	12	11	6
West	7	4	3	3	4	2	7	9	5	11	12	13
Central	3	4	3	4	4	8	4	14	12	12	9	10
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	16	13	13	12	13	10	6	6	4	6	9	7
South	13	10	11	12	12	11	25	31	5	14	6	14
East	15	12	13	11	8	17	17	13	7	9	9	10
West	17	12	12	10	14	17	15	8	12	8	6	14
Central	11	8	10	9	12	10	11	8	6	4	6	11

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 29 Jul 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	26	23	21	18	17	20	22	26	28	36	40	44
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	49	50	51	47	48	49	52	53	48	39	31	37

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